Door manipulator



July 7, 1925.

|-:. scHMiTz DOOR MANIPULATOR Filed March 14, 1923 mamas-sheet 1 Patented July 7, 1925.

UNITED sTA'rEs ERNEST SCHMITZ, OF SAN FRANCISCO, CALEFOENIA, ASSIGNOR TO SCI-IMITZ DOOR OPENER COMPANY, OF SAN FRANCISCO, CALIFORNIA, A PARTNERSHIP COMPOSED Application filed lrfarch 14, 1923.

To all whom it may concern:

Be it known that I, ERNEST Sorriurrz, a citizen of the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Door Manipulators, of which the following is a specification.

This invention relates to door opening 19 and closing devices of the type which may be operated from a comparatively remote point, to manipulate the entrance door of a build- 'ing.

It is the principal object of the present invention to generally improve and simplify devices of the character referred to, so as to provide an eflicient door manipulator requiring but a minimum amount of effort for operation, and which is designed to be positive in operation and practically immune to breakage and other disorders necessitating repairs.

In carrying out this object, I provide a simply constructed mechanismwhich may be permanently mounted and concealed in a wall above a door and operatively connected to the latter. A device, designed for manual manipulation, for operating this mechanism is located at a desirable point, which may be remote from the door. The mechanism may be actuated by the device mentioned to unlatch the door and open and then close the door, and permit it to latch.

35 sume is exemplified in the following description and illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a schematic view disclosing the application of the invention.

Fig. 2 is a view in plan disclosing the preferred form of my invention applied to a door.

Fig. 3 is a side elevation of the same.

Referring more particularly to the accompanying drawings, indicates the entrance door of dwelling. This door is hinged to a door frame llwhich is built between vertical stud elements 12 of the wall of the building. These studs are connected above the door frame by a horizontal brace 14:. Secured to this brace is a bracket bearing 15 which pivotally supports an arcuate operating arm 16. This arm is formed on an arc struck from the pivotal point 17. The

, OF ERNEST SCHMITZ AND HENRY L. WISSIG.

DOOR MANIPULATOR.

Serial N'o. 624,950.

arm 16 is formed with a slotted outer end 18 which is in engagement with a vertical bearing pin 19 formed as an integral part of a bracket 20. This bracket is rigidly secured to the inner side of the door 10 adjacent the top thereof.

Reference being had to Fig. 2, it is seen that the pivotal point 17 of the operating arm 16 is only slightly out of alignment with the hinge pin of the door hinges 21. Therefore, as the arm 16 is swung about the pivotal point 17, its outer end 18 will swing on substantially the same radius as the door. The slight distance between the two pivotal points is provided for by the slot formed in the outer end 18 of the operating arm. Pivotally mounted as at 22 on the operating arm,-is a latch lever 23 which is connected by rods and a bell crank 25 to a latch control cam 26. This earn, as illustrated 1n Fig. 3, is pivotally mounted in the wall at the inner side of the door keeper plate 27 and in register with the keeper opening 28 therein. This cam when swung in the direction of the arrow A will enter the opening 28 and force the keeper 29 of the door latch from engagement therewith.

Tl'ie inner end of the operating arm 16 is formed with a recess 30. The portion of the lever forming the inner edge of this recess is formed on an arc struck from the pivotal I I point 22 of the latch actuating lever 23, One form winch the mventlon may asforming an arcuate guide surface 31. A pin 32 is secured in the end of the latch lever 23 and extends downwardly into engagement with the guide surface 31. This pin is connected to the end of an operating rod 33. It is intended that when the operating rodis moved in the direction of the arrow B, the pm 32 will travel along the guide surface 31 and thus swing the latch lever 23, and thereby actuate the cam 26 to disengage the keeper 29 from the keeper plate 27. When the pin 82 reaches the end of the guide surface 31 and engages the notch 34 therein, the operation mentioned will be accomplished and continued movement of the operating rod 33 and pin 32 will swing the operating arm 16 and open the door. When closing the door the action is similar, inasmuch as the pin 32 first traverses the length of the guide surface 31 to swing the lever 23 and return the cam 26 to aposition iuiobstrncting the ope plate. Continued mover ing rod and the pin 32 wi arm 16 to close the door.

' is shown in L tends to force the oosition niainti' ing the un 26 in an unobstructi g position. This, when the door is open, permits the door to be closed, when desired sity of actuating the 'rnechar Dev ces of the character ject matter oi. this app employed dw the convenience upper stories and to p i close the entrance door oi the mil out having togo to the door an rinse it in the usual manner. The operating mechanism is usually located at the top ot the s airs leading to the door. in the accompanying drawings this point indicaled at The operating mechanism comprises a pivotal lever mounted on the exterior of the wall and connected with a crank arm 32" mounted in the wall. ihis arm is connected by a rod 38 to one leg of a pivotal bell crank 39. The other leg of the hell crank is connected to the operating rod 33. It is seen that by the use or bell crank levers,

the operating lever 36 may be mounted at any desirable point. I

"In operation, the device is assen'ibled and mounted in the walls before the interior finish is completed. Therefore, when the wall is i'wompleted the entire mechanism is concealed with the exception. of the operating lever and the end of the operating arm. This arm projects and swings through a small opening formed in the wall near the 'top of the door casing as indicated at 4:0 in

Fig. 1.

From the foregoing it is clear that movement of the operating lever in'one direction unlatches the door and then swings it open. When the lever is returned to normal position the door is closed and permitted to latch. 7

As mechanism of this character is practically sealed up in the wall it is very desirable that it be positive in operation and not liable to become inoperative from breakage or any other disorder necessitating repairs or adjustments.

From the foregoing it is obvious that a very simple door opening and closing mechanism is provided which is positive and efficient in operation, and comparatively easy to manipulate. V

While I have shown the preferred form of my invention, it is understood that various changes in'the construction of the de- T without tne necesd open or r vice may be made without departing from the invention as defined by the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters'Patent is 1. In combination with a wall having a door frame, a door hinged therein, a door manipulator for swinging said door open ed to be operated to swing the arcuate arm aoout its pivot point to open and close said door.

2. In combination with a wall having a door frame, a door hinged therein, a door manipulator torswinging said door open and closed, said manipulator comprising an arcuate arm disposed in a horizontal plane and pivoted within the wall above the door,

the pivot point of said arm being in sub stantial alignment with the hinging point of the door, one end of said arm projecting through said wall and being formed with a slot, a hearing pin fixed to the door and extending vertically through said slot Whereby swinging movement of the arm will be accompanied by swinging movement otthe door, a latch mechanism on the door, a pivoted cam mounted adjacent the keeper in the latch mechanism in register Withthe keeper opening therein and adapted when actuated to enter said opening and disengage the keeper therefrom, a latch lever pivoted to the arcuate arm and having one end operatively connected to said cam, a pin secured on the other end of the latch 1ever, a guideway formed on said arcnate arm having abutments at its ends, said pin be ing adapted to travel along said guideway and engage said abutments, spring means tending to maintain said pin at one end of said guideway whereby to hold said latch lever in position rendering'said'cam inoperative, a reciprocable rod mounted in the wall and connected to said lever, initial movement of said rod causing swinging movement of said latch lever to operate the cam until said pin on said latch leverwhas engaged the abutment at'the other end of the guideway and further movement of said airm swinging said arcuate lever to open the c oor.

ERNEST SCHMITZ. 

